[HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
**Question 1.** In the initial assessment phase, which metric is most critical for defining the
business continuity requirement of a protected application?
A) Throughput
B) Recovery Point Objective (RPO)
C) Latency
D) Cache size
Answer: B
Explanation: RPO defines the maximum tolerable data loss and drives the choice of synchronous
vs. asynchronous replication.
**Question 2.** When classifying data for replication, which type of dataset typically requires
synchronous protection?
A) Archive logs
B) Non‑critical reporting data
C) Transactional database files
D) Backup images
Answer: C
Explanation: Transactional databases need zero‑data‑loss protection, best met by synchronous
replication.
**Question 3.** Which environmental factor most directly limits the distance for a TrueCopy
(synchronous) deployment?
A) Available storage capacity
B) Fibre Channel bandwidth
C) Propagation delay
D) Number of LUNs
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
Answer: C
Explanation: Synchronous replication is sensitive to round‑trip time; propagation delay grows
with distance and impacts host I/O latency.
**Question 4.** Hitachi Thin Image is primarily used for which of the following purposes?
A) Real‑time remote mirroring
B) Point‑in‑time (PiT) clone creation for development
C) Continuous data protection across sites
D) Global‑active clustering
Answer: B
Explanation: Thin Image creates space‑efficient PiT copies that can be used for testing or
development.
**Question 5.** In a 3DC cascade configuration A‑B‑C, which link carries the “Delta Resync”
traffic when site B experiences a temporary outage?
A) A‑B only
B) B‑C only
C) A‑C only
D) Both A‑B and B‑C
Answer: C
Explanation: During a B outage, A replicates directly to C using the delta resync mechanism to
keep C up‑to‑date.
**Question 6.** Which component of a Global‑Active Device (GAD) provides quorum to avoid
split‑brain scenarios?
A) Cache module
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
B) Journal volume
C) Quorum disk
D) Mirror group
Answer: C
Explanation: The quorum disk ensures that only one site remains active when connectivity is
lost, preventing split‑brain.
**Question 7.** When profiling a workload, the “burst pattern” most influences which design
parameter?
A) Journal size
B) Cache residency
C) Link bandwidth provisioning
D) Number of RAID groups
Answer: C
Explanation: Burst write activity can temporarily exceed average bandwidth, requiring sufficient
headroom on the replication link.
**Question 8.** Which Hitachi tool provides real‑time IOPS and latency metrics for a storage
system?
A) Ops Center Analyzer
B) Hitachi Tuning Manager
C) Replication Manager
D) RAID Manager CLI
Answer: B
Explanation: Tuning Manager collects performance data such as IOPS, latency, and queue depth
for capacity planning.
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
**Question 9.** To calculate the required journal volume size for an asynchronous link, you
must multiply the peak write rate by which additional factor?
A) RPO in seconds
B) RTO in minutes
C) Network latency in ms
D) Number of LUNs
Answer: A
Explanation: Journal capacity must accommodate the amount of data generated during the
defined RPO window.
**Question 10.** Which replication mode is best suited for a distance of 150 km with a latency
of 2 ms?
A) TrueCopy (synchronous)
B) Universal Replicator (asynchronous)
C) ShadowImage local copy
D) Thin Image clone
Answer: A
Explanation: Latency under ~5 ms is generally acceptable for synchronous replication, providing
zero‑data‑loss.
**Question 11.** In Hitachi Universal Replicator, what does the “Journal Flush” operation
accomplish?
A) Clears the cache on the source system
B) Forces all pending writes to be sent to the remote site
C) Deletes old snapshots on the target
Replication Solutions Architect Certification Review
Guide
**Question 1.** In the initial assessment phase, which metric is most critical for defining the
business continuity requirement of a protected application?
A) Throughput
B) Recovery Point Objective (RPO)
C) Latency
D) Cache size
Answer: B
Explanation: RPO defines the maximum tolerable data loss and drives the choice of synchronous
vs. asynchronous replication.
**Question 2.** When classifying data for replication, which type of dataset typically requires
synchronous protection?
A) Archive logs
B) Non‑critical reporting data
C) Transactional database files
D) Backup images
Answer: C
Explanation: Transactional databases need zero‑data‑loss protection, best met by synchronous
replication.
**Question 3.** Which environmental factor most directly limits the distance for a TrueCopy
(synchronous) deployment?
A) Available storage capacity
B) Fibre Channel bandwidth
C) Propagation delay
D) Number of LUNs
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
Answer: C
Explanation: Synchronous replication is sensitive to round‑trip time; propagation delay grows
with distance and impacts host I/O latency.
**Question 4.** Hitachi Thin Image is primarily used for which of the following purposes?
A) Real‑time remote mirroring
B) Point‑in‑time (PiT) clone creation for development
C) Continuous data protection across sites
D) Global‑active clustering
Answer: B
Explanation: Thin Image creates space‑efficient PiT copies that can be used for testing or
development.
**Question 5.** In a 3DC cascade configuration A‑B‑C, which link carries the “Delta Resync”
traffic when site B experiences a temporary outage?
A) A‑B only
B) B‑C only
C) A‑C only
D) Both A‑B and B‑C
Answer: C
Explanation: During a B outage, A replicates directly to C using the delta resync mechanism to
keep C up‑to‑date.
**Question 6.** Which component of a Global‑Active Device (GAD) provides quorum to avoid
split‑brain scenarios?
A) Cache module
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
B) Journal volume
C) Quorum disk
D) Mirror group
Answer: C
Explanation: The quorum disk ensures that only one site remains active when connectivity is
lost, preventing split‑brain.
**Question 7.** When profiling a workload, the “burst pattern” most influences which design
parameter?
A) Journal size
B) Cache residency
C) Link bandwidth provisioning
D) Number of RAID groups
Answer: C
Explanation: Burst write activity can temporarily exceed average bandwidth, requiring sufficient
headroom on the replication link.
**Question 8.** Which Hitachi tool provides real‑time IOPS and latency metrics for a storage
system?
A) Ops Center Analyzer
B) Hitachi Tuning Manager
C) Replication Manager
D) RAID Manager CLI
Answer: B
Explanation: Tuning Manager collects performance data such as IOPS, latency, and queue depth
for capacity planning.
, [HCE3710] HCE 3710 Hitachi Vantara Certified Epert
Replication Solutions Architect Certification Review
Guide
**Question 9.** To calculate the required journal volume size for an asynchronous link, you
must multiply the peak write rate by which additional factor?
A) RPO in seconds
B) RTO in minutes
C) Network latency in ms
D) Number of LUNs
Answer: A
Explanation: Journal capacity must accommodate the amount of data generated during the
defined RPO window.
**Question 10.** Which replication mode is best suited for a distance of 150 km with a latency
of 2 ms?
A) TrueCopy (synchronous)
B) Universal Replicator (asynchronous)
C) ShadowImage local copy
D) Thin Image clone
Answer: A
Explanation: Latency under ~5 ms is generally acceptable for synchronous replication, providing
zero‑data‑loss.
**Question 11.** In Hitachi Universal Replicator, what does the “Journal Flush” operation
accomplish?
A) Clears the cache on the source system
B) Forces all pending writes to be sent to the remote site
C) Deletes old snapshots on the target
